Refractory arch for locomotive-boiler furnaces.



C. E. MGi-JRE.

CH FOR LOCOMOTIVE BOILER FURNAGBS.

MGATIGN NLEDNOV.17,1Q08.

REFRAOTORY AR Patented Sept, y8, 1914.

2 SHEETS*SHEET l.

.Tunai G. B. MUORE.

Y ARCH PQR LOCOMOTIVE BOIUBR PURMCESx APPLICATION FlLISD NOVA 12108.

REFRACTOR Patented Sept. 8, 19H.

2 SHEETS-SHEET 2.

lac

nutren srarns rarnn'r OFFICE.,

CHARLES BBEARLEY "MODRE, OF EVANSTONfILLINOIS, ASSIK'JrITO, BY M ESNE ASSIGN- yE'IEDVIS, TO AMERICAN ARCH COMPANY, LAOF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

unreacronr ARCH/ron LoooMoTIvE-nornnn FURNAcEs.

Specification of Letters Patent.

Patented sept. s, 1914.

Application filed November 17, 1908; Serial No. 463,070. l

To all whom it may concern:

lle' it known that J., CHARLES B. MOORE, a citizen of the United States, and resident of Evanston, Cook county, Illinois, have invented certain new and -useful Improvements in Refractory Arches for Locomotive- Boiier Furnaces, of which the following is a i'ull, true, clear, and exact description, such -as will enable others skilled in the art to make and use the saine.

My *inventionv relates to improvements in refractory arches for locomotive boiler furnaces and has special reference to unproveiuentsf in arches ot the kind which are carlock in such manner as to form a substan-` tially solid vrefractmy porting tubes.

My invention will be more readily. underbody upon the supstood -bf reference to the accomian ino'.-

drawings forming a part this specification andin which; l

Figure l is a vertical longitudinal section ot a locomotive tire-:mx containing an arch embodying my invention, the section being on the line ry-Y oi Fig. i2; L. is a horizontal sectional view on the line lli-X of Fig. l; Fig. 3 au enlarged vertical transverse section on the line .75 Z oi2 l and Q; Fig. 4 is a similar view illustrating the form ot the arch in a narrow firebon; and Figs. Vi and il are peisiiective details of the ends ot' two ot the arch bricks showing how they are formed to interlock.

A locomotive fire-box as chown in the drawings is arranged within the shell, 2, of the boiler; it is made up of the flue sheet,

'part of the flue sheet to the upper part of the rear sheet.l The refractory arch, A,

about to be described rests upon and i's'sup ported by these arch tubes, 11. The lower end of the arch preferabl abuts the flue sheet, 3. In a fire-box lor the wide type there are usually four of the water circulating or arch tubes, ll, and the arch is made up ofv three longitudinal rows of refractory bricks.

In Fig. 2 the bricks composing'the several rows are marked, A', A2, and AS. Each brick is of a size which will permit its being introduced into the re-box through the fuel door, 8. Smaller bricks arenot desirable nor are larger bricks. All of the bricks are longenough to reach across two of the tubes,

l1, yand the ends of the brick are shaped or' formed t0 interlock upon lines above said tubes.V Thus as shown in Figs. 2 and 3 the ends of each brick are inclined and provided with locking ribs or ledges, A", and gromes,

The bricks, A and A2, are relatively inverted and the'ribs or ledges of each brick fit the grooves of the adjoiningbricks; I

preerthat abrupt angles shallbe avoided,

hence the beveled or'inclined ends or surfaces, A", A, upon-the bricks. By interlocking the bricks of each transverse row in this manner `I enjoin or organize them into' a body of suliicient weight to retain its place upon the tubes, ll'. As the bricks occupy inclined positions upon the tubes, it is not necessary to interlock them upon rtransverse lines. A narrow irebox as show-n 1n Fig.

l usually contains only tliree arch tubes, 11',`

ll. ll', and in these cases I form the arch of only two longitudinal rows of bricks, .7;,' 7;. The ends of the bricks abut above the middle tube, l1', and are interlocked by ledges, A, A4, of thesame general form as before described. The outer ends, b, of the bricks need not be provided with interlocking ribs an(l..grooves, but are preferably beveled as shown in Fig. 4. The advantage of the particular brick form herein shown is that 'the bricks. are interchangeable.

As the various modifications of my invention will readily suvgest themselves to one skilled in the art, Iodo not confine the kinvention to the specic structures herein shown and described.

Having thus described myl invention,

i' 1:1 plurality. of n rch tubes in combination, with fa, substantially flirt -refiictory archl vthereon composed of n'plnralityof rows of..

2 i y. 171169,69@ A vided" Witlr-a' longitudinal rib sind l compl'ementari groovparallel' 1 therewith.' ande. adapted to receive 'the com lementr f' rib of `a 'like brick, Said ribs"y :in 'grooves' eing cti-extensive with'scid. ends ofthe brick. 2. Av locomotive boiler furnace containing bricks restingnpon' scid arch tubese'nd| having abutting ends above respective tubes,Y euch of scid bricks having c complementary interlocking rib and recess onreacliot its ends, the ribs of n-djrlcent.bricksenteying,re-

spectivel-y the 'recesses thereof vlfnd prevent-` Aing .the endWi-'se seprretion of Ithe bricks upon Said tubes .andA p erlnltting-j the free re= moval ofcertcinfo-scid bricks, as und for -rided thereon'fwith complementary hooked i; iinterlocking -1-pnrts]l which ,preventil rilative zxendwise sepnrzrtwn. otnzrny vtwlo abutting bricks, the vvfiltermit-e bricksl be1ng` `rever sed i vizo - reversed "weilgesbilpecl 'bricksjlmyingf com-l lation in the plane ofthe plernentnry interl'mfkin)f ribs grooves 'upon' their abutting We .ging surfaces laterzilly coextcnsive therewith whereby the in-v lterlocked bricks nire retained in abutting reto be separated'vertically. ,f V.,

5. A substantially lziltvrerrgtctory arch for locomotive boilerftlu'miccs coinprising a `plu l rch locoiiiotive boiler 1 furnaices vcomposeclfof substantially identical bricks, wedge-shaped' at their ends :mail pro- 4;'jA .substantially 'at refractory uren Ifor] loeo'lnotgijefurnaces composed ,of relatively arch, but are free' relity of vlongitildinal substantially identical rows of refrgtctory bricks, 1the .bricks being alsok'arranged in transverse rows-cachot.

saidbricks beingreversely'beveled 'at itsj ends -andjhaving a rib-and go'ove along eacli end to interlock witlitbe corresponding rib and groove-in an zibutting/ brick, the saidy bricks .wheninterlocked preventing transv- "verse-separation ot bricks and permitting 'free' Vertical removal of certain of the bricks!I 6. A locomotive boiler iieboX, in combi nation' with a .group'lof four substantially,

parallel, inclined; arch tubes aifralgedlonl 4gitudinally therein, :i refrctory front arch bricks, the -outertwo thereof -ning 'erfg- .rnnged with their. lbhge'r sides'resting upon two tubes,`the centerA brick being reversed in position with its shorter side turned downwzrrtlly, supported vby und llin the spacel between said two outer bricks, w erebysaid micldlebrick is removable from its position without disturbing the enti bricks. 'ic

In testimony whereof, I-have 'hereunto' set i hand, this 2d day of November,-1908, in`

.the presence. of two subscribing-witnesses; A

CHARLES BRIEARLEY'VI'OORE';y

Witnesses.:

I y ARTHUR NELSON, 

